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3 years ago

If a=8 and b=4, evaluate the following expression:2a−3b

Mathematics

2 answers:

34kurt3 years ago

8 0

The answer is equal to 4

2(8)-3(4)

16-12=4

Nata [24]3 years ago

7 0

Answer:

Step-by-step explanation:

2(8)-3(4)

16-12

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PtichkaEL [24]

Answer:

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Step-by-step explanation:

Let us assume that both prisms are similar, so we can use proportions to solve for the volume of prism made by triangle XYZ.

Let us find the proportion between the sides of both triangles.

$\frac{\text{Side of triangle XYZ}}{\text{Side of triangle PQR}}=\frac{24}{36}$

$\frac{\text{Side of triangle XYZ}}{\text{Side of triangle PQR}}=\frac{12*2}{12*3}$

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So we can set proportion for volume of both prisms as:

$\frac{\text{Volume of prism made by triangle XYZ}}{\text{Volume of prism made by triangle PQR}}=(\frac{2}{3})^3$

$\frac{\text{Volume of prism made by triangle XYZ}}{\text{Volume of prism made by triangle PQR}}=\frac{8}{27}$

Upon substituting volume of prism made by triangle PQR we will get,

$\frac{\text{Volume of prism made by triangle XYZ}}{7776\text{in}^3}=\frac{8}{27}$

Let us multiply both sides of our equation by 7776 cubic inches.

$\frac{\text{Volume of prism made by triangle XYZ}}{7776\text{ in}^3}*7776\text{ in}^3=\frac{8}{27}*7776\text{ in}^3$

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Therefore, the volume of prism made by triangle XYZ is 2304 cubic inches.

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If a=8 and b=4, evaluate the following expression:2a−3b​

If a=8 and b=4, evaluate the following expression:2a−3b